Best Brick Alternatives: Block Apps Without Hardware

Comparing Brick alternatives for iPhone: Opal, One Sec, ScreenZen, iOS Screen Time and Kohru, with prices, strictness and how hard each is to bypass.

8 min read

TL;DR

Brick is a $59 NFC puck that blocks apps on your phone until you physically tap it. The best alternatives to Brick are software apps that trade some of that strictness for zero hardware cost.

  • Brick: the strictest option, because unblocking requires walking to the puck; costs $59 once.
  • Opal: scheduled blocks with a paid Hard Mode; free tier covers three recurring rules, Pro runs $99.99 per year.
  • One Sec: adds a breathing pause before distracting apps open; gentlest option, free for one app.
  • ScreenZen: delays, limits and a strict block mode, completely free and donation-supported.
  • iOS Screen Time: free and already on your iPhone, but easy to bypass by design.
  • Kohru: blocks apps and websites across your phone, laptop and Chrome, and ties blocking to focus sessions and habits.

If you want the hardest possible block, Brick itself is still worth the $59. If you want most of that discipline without buying hardware, the software options below each fit a different kind of reader.

Why people look for Brick alternatives

Brick is a small NFC puck you stick somewhere out of reach, like a drawer or a shelf across the room. You tap your phone to it, and Brick blocks the apps and websites you chose. To unblock, you have to tap the puck again. That physical step is the whole point: you cannot talk yourself out of the block while sitting on the couch.

Screenshot of the homepage of Brick

The puck costs $59 one time. Brick's own pages describe a Strict Mode and a limited number of emergency unbricks, so even the escape hatches are capped. It works with a recent iPhone or Android phone.

So why look elsewhere? The honest reasons are cost, availability, and fit. Some readers do not want to spend $59 or wait for shipping. Others find Brick too strict for their routine, or want blocking that also covers their laptop and browser. That is where software comes in.

The core tradeoff: physical friction versus software friction

Every app like Brick works by adding friction, but the friction differs in one key way. Brick's friction is physical. You have to get up and tap a puck, and you cannot fake that from your desk.

Software blockers add friction too, but it is all digital: a delay, a breathing exercise, a typing challenge, or a waiting period. That is easier to live with, and easier to defeat. If you can unlock your phone, you can usually fight the software eventually.

That does not make software worse. It means you should pick a blocker whose friction matches your honesty level. Impulse scrollers do fine with a pause. People who have already learned to defeat Screen Time need something stricter, either Brick or a software tool with a genuinely hard block mode.

One more note: this guide leans iPhone-first, because that is where most Brick-style blocking lives. Each alternative notes where it also covers Android, Mac or Windows.

Opal: scheduled blocks with a paid hard mode

Opal is one of the best-known screen time apps, and it works on iPhone, Mac and Android. You set rules that block chosen apps and websites on a schedule, during a focus timer, or after a usage limit. Opal uses Apple's Screen Time API on iPhone, so blocking happens at the system level rather than inside the app.

Screenshot of the homepage of Opal

The free tier is genuinely usable: Opal's help center says it includes three recurring rules (schedules, time limits, and open limits), unlimited immediate timers, weekly focus reports, and your daily score. Opal Pro, listed at $99.99 per year on its pricing page, unlocks more rules and the strict settings that matter most here: Hard Mode, which blocks cancellation and resets so you cannot talk your way out of a running block.

Best fit: readers who want Brick-like firmness during scheduled study or work hours, and who will actually use a subscription. Worst fit: anyone who wants a free long-term solution.

One Sec: a pause instead of a wall

One Sec takes the opposite approach. Instead of blocking apps, it inserts an interruption, like a deep breath prompt, before the app opens. The idea is to break the automatic open-and-scroll loop so you decide on purpose. Its own pages cite research with the Max Planck Institute and Heidelberg University reporting roughly 57% fewer app openings on average.

Screenshot of the homepage of One Sec

The free version lets you set the interruption for one app. One Sec's FAQ lists Pro at about €14.99 per year in Europe, and the US App Store shows about $19.99 per year, so expect the price to vary by region. One Sec also has a browser extension and a Mac app, so the pause follows you across devices.

Understand the limitation: One Sec is the weakest strictness in this list. It interrupts you; it does not really stop you. Best fit: impulse openers who want to reduce scrolling gradually, or readers who found hard blockers too aggressive and gave up on them.

ScreenZen: delay, limits, and a strict mode, all free

ScreenZen is a donation-supported app that is completely free with no subscription. Its toolkit is closer to Brick's than One Sec's: it delays app opens, caps daily usage, schedules blocks, and offers a strict block mode for time ranges. Its developers also describe a lock mode that prevents uninstalling and closes common loopholes.

Screenshot of the homepage of ScreenZen

It covers iOS, macOS, Windows and Android, which is unusually broad for a free tool. ScreenZen has also launched halo, a small $49 companion device that blocks chosen apps while you are in a specific space, which is its own answer to Brick's physical approach.

Best fit: zero-budget readers who still want a real block, not just a pause. It is the closest free match to what Brick does.

iOS Screen Time: free, built-in, and easy to defeat

Your iPhone already ships with a blocker. Apple's Screen Time can set app limits, downtime schedules, and content restrictions without any install. If you have never tried blocking seriously, start here. It costs nothing and covers the basics.

The catch is that Apple designed Screen Time to be soft. By default, you can extend a limit with a four-digit code you chose yourself, and you can turn restrictions off whenever you like. For many people, that is enough to slow down. For people who already know the workaround, it is not a barrier at all.

If you go this route, our practical guide to limiting app usage on iPhone walks through the setup, and the best app blocker for iPhone roundup covers where third-party tools add on top of it.

Kohru: blocking tied to focus sessions and tasks

Kohru is a study and productivity app that approaches the same problem from a different angle. It blocks distracting apps and websites across your phone, your laptop and the Chrome browser, so the block covers wherever you actually study, not just your phone. No hardware or puck is involved.

Screenshot of the homepage of Kohru

Where it differs from most blockers is what the block is attached to. Kohru organizes your tasks into smart to-do lists, and you can turn a task from your Work or Personal list into a distraction-free focus session. It also tracks habits, focus time, completed tasks and progress, so you can see whether your study routine is actually improving week to week. It was also built with attention-regulation challenges like ADHD in mind.

Best fit: students and working professionals who want blocking as part of a full study system, with sessions, tasks and habit tracking in one place. The tradeoff: it is an app rather than a physical gate, so its bypass resistance depends on the strictness of the blocks you configure rather than on a puck in a drawer. If your main problem is a single stubborn app, Brick or ScreenZen may be simpler.

If you choose the software route, our best focus apps for iPhone and best iPhone productivity apps roundups show how blockers fit into a wider setup.

Free and habit-based options that skip apps entirely

Two quick notes before the comparison. First, simply deleting the app and re-downloading it when you truly need it works better than it sounds, because the friction is now the App Store. Second, some people go further with a dumb-phone experiment or leaving the phone in another room during study blocks. These approaches cost nothing and are extremely hard to bypass, but they demand routine instead of technology. Our guide on how to stop scrolling covers the habit side of this in detail.

Comparison at a glance

Tool Mechanic Free tier Price Bypass resistance Platforms
Brick Physical NFC tap to block and unblock None $59 one-time Highest: requires physical presence Recent iPhone or Android
Opal Scheduled rules, timers, limits via Screen Time API 3 recurring rules, immediate timers $99.99/yr Pro High in Hard Mode iPhone, Mac, Android
One Sec Breathing pause before apps open 1 app About $19.99/yr on the US App Store; €14.99 listed in its FAQ, varies by region Lowest: interruption only iPhone, Android, browsers, Mac
ScreenZen Delays, limits, strict block mode Fully free Donation-supported High with strict and lock modes iOS, macOS, Windows, Android
iOS Screen Time Built-in limits and downtime Fully free None Low by default: self-set passcode iPhone, iPad, Mac
Kohru Blocks tied to focus sessions, across devices 7-day free trial Subscription after the trial Depends on your block settings iPhone, laptop, Chrome

Which one fits your routine?

Pick by your honest answer to one question: what do you do when the block annoys you?

Checklist: Which one fits your routine? (6 items)

  • If you defeat every software block you install, the physical friction of Brick is still the best reason to spend $59.
  • If you are an impulse opener who scrolls without thinking, One Sec's pause is often enough to break the loop.
  • If you need a real block but your budget is zero, ScreenZen is the strongest free option.
  • If you want strict scheduled blocking during study or work hours and do not mind a subscription, Opal earns its price through Hard Mode.
  • If you want blocking tied to study sessions, tasks and habits across phone and laptop, Kohru is built for exactly that routine.
  • If your needs are simple, start with iOS Screen Time. It is already installed.

If blocking plus a study system in one app sounds like your situation, you can download Kohru on the App Store, or add the Chrome extension alongside it, and run your first distraction-free session today.